Jewelry has a broad sense and a narrow sense. Jewelry in a narrow sense refers to jade products. Jewelry in a broad sense should include jewelry, handicrafts or other treasures made of gold and silver and natural materials with certain value, which are collectively called jewelry. Therefore, there was a saying of "gold and silver jewelry" in ancient times to distinguish gold and silver from jewelry.

With the development of social economy, the concept of jewelry should be extended to include gold, silver and jewelry besides natural gems and artificial products. The industries involved in these terms are collectively referred to as "jewelry industry". The scope of "jewelry" is much larger than that of "gem" in a broad sense. Gems in a broad sense generally refer to those raw materials suitable for polishing or carving into jewelry or handicrafts.

Jewelry is divided into natural jewelry, jade and artificial products.

Natural gems: diamond, ruby, sapphire, golden green cat's eye, beryl, emerald, tourmaline, opal, chalcedony, Hebi, etc. 17 kinds.

Natural jade: Huang Longyu, agate, jasper, Lingbi jade, Hetian jade, blue and white jade, xiuyan jade, Nanyang jade, chalcedony, serpentine, similar jade, jadeite, lantian jade, malachite, turquoise, Dongling jade, white marble, Junggar jade, luminous jade, malachite, cryolite, lapis lazuli, jade and ice flower jade.

Natural colored stones: Shoushan stone, Tian Huangshi, Qingtian stone, bloodstone, Wuhua stone, Changbai stone, Duanshi, Shitao, Songhua stone, Yuhua stone, Balin stone, Helan stone, Chrysanthemum stone, Ziyun stone, Qingshan stone, Yanzishi Fossil fossil, Mangshi, Hongsi stone, Taihu stone, feldspar stone and serpentine stone. Natural organic gems: amber, pearl, coral, ivory, coal jade, etc.